The Far-Infrared Absorption Spectrum of HD¹⁶O: Experimental Line Positions, Accurate Empirical Energy Levels, and a Recommended Line List.

ABSTRACT: The far-infrared absorption spectrum of monodeuterated water vapor, HD¹⁶O, is analyzed using three high-sensitivity absorption spectra recorded by high-resolution Fourier transform spectroscopy at the SOLEIL synchrotron facility. The gas sample was obtained using a 1:1 mixture of H₂O and D₂O leading to a HDO abundance close to 50%. The room temperature spectra recorded in the 50-720 cm^-1 range cover most of the rotational band. The sensitivity of the recordings allows for lowering by three orders of magnitude the detectivity threshold of previous absorption studies in the region. Line centers are determined with a typical accuracy of 5 × 10^-5 cm^-1 for well-isolated lines. The combined line list of 8522 water lines is assigne

SUBMITTER: Mikhailenko SN 

PROVIDER: S-EPMC11643698 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature